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Statement of a problem № 2503

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The right-angle rule (or square) shown in Fig. 5-7 hangs at rest from a peg as shown. It is made of a uniform metal sheet. One arm is L cm long, while the other is 2L cm long. Find (to two significant figures) the angle d at which it will hang.

Solution:
The right-angle rule (or square) shown in Fig. 5-7 hangs at rest from a peg as s

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